MAZATLAN BIVALVES 



colour in irregular radiating lines, crossing the oblique stria?. 

 It measures long. ' 37, lat. ' 64, alt. ' 12. 



Hob Mazatlan ; Col. Cuming. ?? Mazatlan ; in Spoiidylus 

 washings ; Lpool Col. 



61. TELLINA BEEVIEOSTEIS, Desk. 

 Proc. ZooL Soc. 1854, p. 362. 



This little valve seems to suit the description above quoted : it 

 differs from T. gracillima in being very inequilateral, the lateral 

 and cardinal teeth very strong, and the lamellae very regular, 

 not much raised and rather close. Long. '03, lat. 05, alt. '015. 

 Hab. Central America and California [PGulf], Col. Cum- 

 ing. Mazatlan ; extremely rare, jun ; L'pool Col. 

 Tablet 124 contains 1 valve, and a fragment of a larger 

 specimen. Nothing else was found. 



62. TELLTNA ? DENTICULATA, Desk. 



Proc. ZooL Soc. 1854, p. 365. 



Shell like a little T. crassa, with exceedingly large and 

 projecting lateral teeth ; muscular impressions strongly mark- 

 ed. Pallial line indistinct. The outside of both valves is worn, 

 and prevents the identification of the species. Long. "065, 

 lat. '07, alt, '02. 

 Hal). Unknown, Col. Cuming. ? Mazatlan ; from Spondylus 



washings ; L'pool Col, 



Tablet 125 contains the only specimen. 



63. TELLINA , sp. indet. 



Tablet 126 contains an imperfect valve remarkable for its 

 3 strong rather divergent cardinal teeth ; the lateral ones are 

 not developed, but there appear spaces for their reception 

 from the opposite valve. 

 Hob. Mazatlan ; off Spondylus ; L'pool Col. 



64. TELLINA , sp. indet. 



Tablet 127 contains a broken valve remarkable for its sub- 

 diaphanous concentric lines on a smooth surface, A fragment 



